Ben has $10 to spend on dinner. He can have a pizza delivered, drive to a burger place, or go to the grocery store to get ingredients for a fresh salad. In the end, he goes with the salad. If each meal would have cost him the same amount, what is Ben’s incentive for choosing salad?
 A. 
 to eat a healthier meal
 B. 
 to help the local economy
 C. 
 to save gas
 D. 
 to save on his telephone bill